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Understanding the superconductivity and charge density wave interaction through quasi-static lattice fluctuations

Porter, Zach ; Shen, Lingjia LU ; Plumley, Rajan ; Burdet, Nicolas G. ; Petsch, Alexander N. ; Wen, Jiajia ; Drucker, Nathan C. ; Peng, Cheng ; Chen, Xiaoqian M. and Fluerasu, Andrei , et al. (2024) In Proceedings of the National Academy of Sciences 121(50).
Abstract
In unconventional superconductors, coupled charge and lattice degrees of freedom can manifest in ordered phases of matter that are intertwined. In the cuprate family, fluctuating short-range charge correlations can coalesce into a longer-range charge density wave (CDW) order which is thought to intertwine with superconductivity, yet the nature of the interaction is still poorly understood. Here, by measuring subtle lattice fluctuations in underdoped YBa2Cu3O6+y on quasi-static timescales (thousands of seconds) through X-ray photon correlation spectroscopy, we report sensitivity to both superconductivity and CDW. The atomic lattice shows remarkably faster relaxational dynamics upon approaching the superconducting transition at Tc ≈ 65 K. By... (More)
In unconventional superconductors, coupled charge and lattice degrees of freedom can manifest in ordered phases of matter that are intertwined. In the cuprate family, fluctuating short-range charge correlations can coalesce into a longer-range charge density wave (CDW) order which is thought to intertwine with superconductivity, yet the nature of the interaction is still poorly understood. Here, by measuring subtle lattice fluctuations in underdoped YBa2Cu3O6+y on quasi-static timescales (thousands of seconds) through X-ray photon correlation spectroscopy, we report sensitivity to both superconductivity and CDW. The atomic lattice shows remarkably faster relaxational dynamics upon approaching the superconducting transition at Tc ≈ 65 K. By tracking the momentum dependence, we show that the intermediate scattering function almost monotonically scales with the relaxation distance of atoms away from their average positions above Tc and in the presence of the CDW state, while this peculiar trend is reversed for other temperatures. These observations are consistent with an incipient CDW stabilized by local strain. This work provides insights into the crucial role of relaxational atomic fluctuations for understanding the electronic physics cuprates, which are inherently disordered due to carrier doping. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Proceedings of the National Academy of Sciences
volume
121
issue
50
article number
2412182121
publisher
National Academy of Sciences
external identifiers
  • pmid:39630858
  • scopus:85211632485
ISSN
1091-6490
DOI
10.1073/pnas.2412182121
project
Exploring the connections between electronic instabilities and lattice strain in cuprate superconductors
language
English
LU publication?
yes
id
d5be54ca-a7dd-42e1-a32d-ed79c4739939
date added to LUP
2024-12-05 08:45:50
date last changed
2025-04-04 14:55:43
@article{d5be54ca-a7dd-42e1-a32d-ed79c4739939,
  abstract     = {{In unconventional superconductors, coupled charge and lattice degrees of freedom can manifest in ordered phases of matter that are intertwined. In the cuprate family, fluctuating short-range charge correlations can coalesce into a longer-range charge density wave (CDW) order which is thought to intertwine with superconductivity, yet the nature of the interaction is still poorly understood. Here, by measuring subtle lattice fluctuations in underdoped YBa2Cu3O6+y on quasi-static timescales (thousands of seconds) through X-ray photon correlation spectroscopy, we report sensitivity to both superconductivity and CDW. The atomic lattice shows remarkably faster relaxational dynamics upon approaching the superconducting transition at Tc ≈ 65 K. By tracking the momentum dependence, we show that the intermediate scattering function almost monotonically scales with the relaxation distance of atoms away from their average positions above Tc and in the presence of the CDW state, while this peculiar trend is reversed for other temperatures. These observations are consistent with an incipient CDW stabilized by local strain. This work provides insights into the crucial role of relaxational atomic fluctuations for understanding the electronic physics cuprates, which are inherently disordered due to carrier doping.}},
  author       = {{Porter, Zach and Shen, Lingjia and Plumley, Rajan and Burdet, Nicolas G. and Petsch, Alexander N. and Wen, Jiajia and Drucker, Nathan C. and Peng, Cheng and Chen, Xiaoqian M. and Fluerasu, Andrei and Blackburn, Elizabeth and Coslovich, Giacomo and Hawthorn, David G. and Turner, Joshua J.}},
  issn         = {{1091-6490}},
  language     = {{eng}},
  month        = {{12}},
  number       = {{50}},
  publisher    = {{National Academy of Sciences}},
  series       = {{Proceedings of the National Academy of Sciences}},
  title        = {{Understanding the superconductivity and charge density wave interaction through quasi-static lattice fluctuations}},
  url          = {{http://dx.doi.org/10.1073/pnas.2412182121}},
  doi          = {{10.1073/pnas.2412182121}},
  volume       = {{121}},
  year         = {{2024}},
}